Display device

The present application is a continuation of U.S. patent application Ser. No. 18/214,229, filed on Jun. 26, 2023, which is a continuation of U.S. patent application Ser. No. 17/677,333, filed on Feb. 22, 2022, now issued as U.S. Pat. No. 11,721,247, which is a continuation of U.S. patent application Ser. No. 16/768,384, filed on May 29, 2020, now issued as U.S. Pat. No. 11,335,218, which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/JP2018/039678, filed on Oct. 25, 2018, which claims the benefit of Japanese Priority Patent Application No. 2017-235272, filed on Dec. 7, 2017, the disclosures of which are hereby incorporated herein by reference.

The present technology relates to a flexible display device that displays an image using an organic light emitting phenomenon.

Various researches and developments have been made on a display device that displays an image using an organic light emission phenomenon, i.e., organic electroluminescence (EL).

Specifically, a display device having flexibility has been proposed (for example, see PTL1) that allows a degree of freedom regarding how the display device is used to be expanded.

Various studies have been made on a configuration of the display device that displays an image using the organic light emission phenomenon. However, the flexible display device that displays an image using the organic light emission phenomenon is still not convenient enough; therefore, there is room for improvement.

Accordingly, it is desirable to provide a display device that is able provide excellent convenience.

A display device includes a first rotation member configured to rotate, a second rotation member configured to rotate, the second rotation member being spaced apart from the first rotation member, a conveyance member that is extended between the first rotation member and the second rotation member, is configured to be conveyed between the first rotation member and the second rotation member in accordance with respective rotations of the first rotation member and the second rotation member, and has an inner surface and an outer surface, an abutting movement member that is disposed between the first rotation member and the second rotation member, and is configured to move to cause the conveyance member to be partially pushed up while being abutted against the inner surface, and a display member having flexibility that is attached to the outer surface, and displays an image using an organic light emitting phenomenon.

The display device according to the present technology is able to provide excellent convenience because: the flexible display member is attached to the conveyance member that is configured to be conveyed in accordance with the respective rotations of the first rotation member and the second rotation member; and the abutting movement member disposed between the first rotation member and the second rotation member is configured to move to cause the conveyance member to be partially pushed up.

It is to be noted that the effects described above are not necessarily limitative. With or in the place of the above effects, there may be achieved any one of the effects described in this specification or other effects that may be grasped from this specification.

1-1. Overall Configuration 1-2. Configuration of Display Panel 1-3. Block Configuration 1-4. Operation 1-5. Workings and Effects 1. Display Device 2. Modification Example In the following, some embodiments of the present disclosure are described in detail with reference to the drawings. It is to be noted that description is given in the following order.

First, a display device according to an embodiment of the present technology will be described.

150 150 Display device described here includes a display panelto be described later that displays an image. This display panelis a display that displays an image using an organic light emitting phenomenon, and is a so-called organic EL display.

150 The display panelis flexible, is therefore a display that is foldable, and is a so-called flexible display.

[1-1. Overall Configuration]

First, an overall configuration of the display device will be described.

1 8 FIGS.to 1 4 FIGS.to 5 8 FIGS.to 100 100 100 100 100 each illustrate a configuration of a display devicewhich is a specific embodiment of the display device. It is to be noted thateach illustrate a state of the display devicewhen the display deviceis in use, andeach illustrate a state of the display devicewhen the display deviceis not in use.

1 5 FIGS.and 2 6 FIGS.and 100 100 In particular, each ofillustrates a plane configuration (front view) of the display device. Each ofillustrates a plane configuration (side view) of the display device.

3 7 FIGS.and 2 6 FIGS.and 4 8 FIGS.and 1 5 FIGS.and 3 4 7 8 FIGS.,,, and 100 100 160 each represent a partial cross-sectional configuration (side view) of the display deviceand respectively correspond to.each represent a partial cross-sectional configuration (front view) of the display deviceand respectively correspond to. It is to be noted that, in each of, only a cross section of a housingto be described later is illustrated.

1 8 FIGS.to 100 110 120 130 140 150 160 170 180 As illustrated in, for example, the display deviceincludes conveyance rollersand, a conveyance sheet, a movement mechanism, the display panel, the housing, a cleaning mechanism, and a slide mechanism.

2 FIG. 2 FIG. 2 FIG. 2 FIG. 2 3 FIGS.and 150 150 150 Hereinafter, for convenience, the left side inis referred to as “front”, the right side inis referred to as “back”, the upper side inis referred to as “top”, and the lower side inis referred to as “bottom”. Thus, for example, in, a display surface P of the display panelfaces the front; therefore, the display paneldisplays an image toward the front. The “display surface P” is a surface on which the display paneldisplays the image.

[Housing]

160 100 160 The housingis a box-shaped member configured to store a series of components of the display deviceand to cause some of the series of components to be drawn out as necessary. Here, the housingserves as a “storage member” of one embodiment of the present technology.

110 120 130 140 150 130 140 150 The “series of components” described herein includes, for example, the conveyance rollersand, the conveyance sheet, the movement mechanism, and the display panel. In addition, “some of the series of components” are, for example, the conveyance sheet, the movement mechanism, the display panel, and the like.

160 160 130 140 150 A top surface of housingis provided with, for example, an openingK that draws out the conveyance sheet, the movement mechanism, the display panel, and the like.

[Conveyance Roller]

110 120 130 110 120 The conveyance rollersandare each a cylindrical member that conveys the conveyance sheet. Here, the conveyance rollerserves as a “first rotation member” of one embodiment of the present technology, and the conveyance rollerserves as a “second rotation member” of one embodiment of the present technology.

110 120 160 110 120 120 110 120 The conveyance rollersandare stored in the housing. The conveyance rolleris spaced apart from the conveyance rollerand, more specifically, is disposed, for example, in front of the conveyance roller. The conveyance rollersandeach extend, for example, in an X-axis direction and are each rotatable about the X-axis (as a rotation axis).

110 120 180 It is to be noted that each of the conveyance rollerandis supported by the slide mechanismso as to be rotatable, for example.

[Conveyance Sheet]

130 150 130 The conveyance sheetis a strip-shaped member that is conveyed to move the display panel. The conveyance sheetserves as a “conveyance member” of one embodiment of the present technology.

130 130 130 130 130 130 130 The conveyance sheetextends, for example, in a Y-axis direction and has an outer surfaceA and an inner surfaceB. The outer surfaceA is a so-called front surface of the conveyance sheet(i.e., a surface visible from outside), and the inner surfaceB is a so-called back surface of the conveyance sheet(i.e., a surface invisible from outside).

130 110 130 120 130 110 120 110 120 110 120 One end in the extending direction of the conveyance sheetis fixed to, for example, the conveyance roller, and the other end in the extending direction of the conveyance sheetis fixed to, for example, the conveyance roller. Thus, the conveyance sheetis extended between the conveyance rollersand, and is therefore able to be conveyed between the conveyance rollersandin accordance with the respective rotations of the conveyance rollersand.

130 110 130 120 130 110 120 Specifically, for example, in a case where the conveyance sheetis unwound in accordance with the rotation of the conveyance rollerand the conveyance sheetis wound in accordance with the rotation of the conveyance roller, it is possible to convey the conveyance sheetfrom the conveyance rollerto the conveyance roller.

130 120 130 110 130 120 110 In contrast, for example, in a case where the conveyance sheetis unwound in accordance with the rotation of the conveyance rollerand the conveyance sheetis wound in accordance with the rotation of the conveyance roller, it is possible to convey the conveyance sheetfrom the conveyance rollerto the conveyance roller.

130 110 120 130 110 130 110 120 130 120 A method of winding the conveyance sheetby each of the conveyance rollersandis not particularly limited. Here, the conveyance sheetis wound by the conveyance rollerto cause the outer surfaceA to be adjacent to the conveyance roller, and is wound by the conveyance rollerto cause the outer perimeter surfaceA to be adjacent to the conveyance roller, for example.

130 130 130 142 130 130 142 130 142 142 130 142 142 It is to be noted that, as will be described later, the conveyance sheetincludes an adjacent partX and a non-adjacent partY, in a state in which a supportis moved to cause the conveyance sheetto be partially pushed up while being abutted against the inner surfaceB, that is, in a state in which the supportis moved to a raised position. The adjacent partX is a part adjacent to an outer perimeter surfaceM of the supportand the non-adjacent partY is a part that is not adjacent to the outer perimeter surfaceM of the support.

100 140 130 130 130 130 1 130 2 142 130 1 110 140 142 130 2 120 140 142 Here, for example, the display devicehas one movement mechanism; therefore, the conveyance sheetincludes one adjacent partX and two non-adjacent partsY (YandY) when the supportmoves up to the raised position. The non-adjacent partYis, for example, a part located between the conveyance rollerand the movement mechanism(the support). The non-adjacent partYis a part located between the conveyance rollerand the movement mechanism(the support).

130 130 150 130 110 120 142 142 130 The material of the conveyance sheetis not particularly limited. However, it is preferable that the conveyance sheetbe flexible similarly to the display panel. One reason is that the conveyance sheetis allowed to be curved easily, and is therefore easily wound by each of the conveyance rollersand, and easily conveyed along the outer perimeter surfaceM of the support. Specifically, the conveyance sheetincludes, for example, a polymer sheet or the like which contains polyimide.

130 130 Further, a thickness of the conveyance sheetis not particularly limited, and is freely set in relation to the flexibility of the conveyance sheetdescribed above or the like.

[Movement Mechanism]

140 130 130 The movement mechanismis a mechanism that partially moves the conveyance sheetin a direction (Z-axis direction) that intersects a conveyance direction (Y-axis direction) of the conveyance sheet.

140 110 120 130 130 140 130 130 The movement mechanismis disposed between the conveyance rollersand, and is movable in the Z-axis direction while being abutted against the inner surfaceB of the conveyance sheet. Thus, the movement mechanismis able to push up a portion of the conveyance sheetand return the portion of the conveyance sheetto a substantially flat state.

140 141 142 110 120 130 150 170 141 142 140 142 4 8 FIGS.and 4 8 FIGS.and Specifically, the movement mechanismincludes an elongating/shortening partand the support, as illustrated in, for example. However,each illustrate a state in which the conveyance rollersand, the conveyance sheet, the display panel, and the cleaning mechanismare omitted, to make the configuration (the elongating/shortening partand the support) of the movement mechanismeasier to see. Here, the supportserves as an “abutting movement member” of one embodiment of the present technology.

[Elongating/Shortening Part]

141 1410 1420 1410 141 1410 1420 The elongating/shortening partis, for example, a member that is able to elongate and shorten in the Z-axis direction, and is, for example, a linkage in which a plurality of pivot platesis linked to each other to be pivotable about a plurality of pivot pins. The plurality of pivot platesis disposed, for example, in a zigzag shape, and thus the elongating/shortening partis able to elongate and shorten in the Z-axis direction, for example, by the plurality of pivot platespivoting about the plurality of pivot pins(as a pivot)

4 FIG. 8 FIG. 141 1410 141 1410 illustrates a state in which the elongating/shortening partis elongated by the plurality of pivot platespivoting so as to be spaced apart from each other., illustrates a state in which the elongating/shortening partis shortened by the plurality of pivot platespivoting so as to be close to each other.

4 8 FIGS.and 1410 1411 141 1420 1421 1424 1410 1420 In each of, for simplifying the illustrated contents, four pivot plates(to) are linked to each other via four pivot pins(to), for example. However, the respective numbers of pivot platesand pivot pinsare not particularly limited.

1411 1412 1421 1412 1413 1422 1413 1414 1423 1414 1411 1424 Here, for example, one end of the pivot plateand one end of the pivot plateare linked to each other via the pivot pin, and the other end of the pivot plateand one end of the pivot plateare linked to each other via the pivot pin. Further, the other end of the pivot plateand one end of the pivot plateare linked to each other via the pivot pin, and the other end of the pivot plateand the other end of pivot plateare linked to each other via the pivot pin.

1412 1413 180 1411 1414 142 The pivot platesandare each supported by the slide mechanism, for example, so as to be pivotable, and the pivot platesandare each linked to the support, for example, so as to be pivotable.

[Support]

142 130 130 130 130 141 The supportis a member that is abutted against the inner surfaceB of the conveyance sheet, to move the conveyance sheetwhile supporting a portion of the conveyance sheetin accordance with an elongating/shortening operation of the elongating/shortening part.

142 141 Specifically, the supportis movable between the raised position and a lowered position using, for example, the elongating/shortening operation of elongating/shortening part.

1 3 FIGS.to 4 FIG. 141 142 160 141 142 130 142 130 142 142 each illustrate a state in which the elongating/shortening partis elongated (), thus the supportis drawn out of the housingtogether with the elongating/shortening part, and the supportis in the raised position. In this case, a portion of the conveyance sheetis pushed up by the support, thus the conveyance sheetis able to be conveyed along the outer perimeter surfaceM of the support.

5 7 FIGS.to 8 FIG. 141 142 160 141 142 142 130 110 120 130 160 each illustrate a state in which the elongating/shortening partis shortened (), thus the supportis stored in the housingtogether with the elongating/shortening partand the supportis in the lowered position. In this case, the supportis lowered and the conveyance sheetis wound by one or both of the conveyance rollersand, and thus the conveyance sheetis able to be stored in the housing.

142 However, the supportmay be located at any position between the raised position and the lowered position, as necessary.

142 142 110 120 142 142 130 142 A three-dimensional shape of the supportis not particularly limited, and may be a cylindrical, a prism, or any other shape. Among these, it is preferable that supportbe a cylindrical member extending in the Y-axis direction, in a similar manner to each of the conveyance rollersand. This is because the supporthas the outer perimeter surfaceM having a curved shape, and the conveyance sheetis easily conveyed along the outer perimeter surfaceM.

110 120 140 140 110 120 Here, a positional relationship between each of the conveyance rollersandand the movement mechanismis not particularly limited as long as the movement mechanismis disposed between the conveyance rollersand.

150 130 1 150 100 150 110 140 130 1 2 3 FIGS.and However, the display panelis attached to the non-adjacent partYof the conveyance sheet, for example, as will be described later. In such a case, to make it easier for a user of the display device(hereafter simply referred to as the “user”) to see the display panel, i.e. to make it easier for the user to face the display surface P, the conveyance rollerand the movement mechanismare preferably disposed to cause the non-adjacent partYto extend substantially vertically, as illustrated in.

150 130 2 130 150 150 120 140 130 2 11 FIG. In addition, for example, as described later, there is also a case where the display panelis disposed on the non-adjacent partYby the conveyance sheetbeing conveyed while supporting the display panel(see). Also in this case, to make it easier for the user to see the display panel, the conveyance rollerand the movement mechanismare preferably disposed to cause the non-adjacent partYto extend substantially vertically.

[Display Panel]

150 150 The display panelis a member that displays an image. Here, the display panelserves as a “display member” of one embodiment of the present technology.

150 130 130 150 130 The display panelis attached to the outer surfaceA of the conveyance sheet. The display panelis thus movable in accordance with the conveyance of the conveyance sheet.

150 130 150 110 120 142 142 In particular, the display panelis flexible, as described above. One reason is that, similarly to the case described regarding the conveyance sheet, the display panelis allowed to be curved easily, and is therefore easily wound by each of the conveyance rollersand, and easily conveyed along the outer perimeter surfaceM of the support.

142 150 130 1 130 150 130 130 150 130 130 130 1 150 150 130 1 FIG. With the supportmoved to the raised position, the display panelis preferably located near the center of the non-adjacent partYin the Z-axis direction, as illustrated in. That is, it is preferable that a blank spaceS be provided at upstream side of the display panelin the conveyance direction of the conveyance sheet, and a blank spaceS is also provided at downstream side of the display panelin the conveyance direction of the conveyance sheet. The blank spaceS is a region of the non-adjacent partYto which the display panelis not attached. This makes it possible to adjust a position of the display panelin the conveyance direction of the conveyance sheet, as will be described later.

150 9 FIG. It is to be noted that the detailed configuration of the display panelwill be described later (see).

[Cleaning Mechanism]

170 130 130 130 170 130 130 The cleaning mechanismis a mechanism for cleaning the outer surfaceA and the inner surfaceB of the conveyance sheet. The cleaning mechanismremoves foreign matters such as dust and dust stuck to the outer surfaceA and the inner surfaceB, for example.

170 130 130 150 130 170 In particular, the cleaning mechanismis able to clean not only the outer surfaceA of the conveyance sheet, but also the display surface P of the display panelattached to the conveyance sheet. The cleaning mechanismserves as a “cleaning member” of one embodiment of the present technology.

170 130 171 172 130 171 172 110 120 Specifically, the cleaning mechanismis disposed along a conveyance path of the conveyance sheet, and includes a pair of cleaning rollersandopposed to each other via the conveyance sheet, for example. Each of the cleaning rollersandis, for example, a cylindrical member extending in the X-axis direction, similarly to the conveyance rollersand, and is rotatable about its X-axis.

171 172 171 130 130 172 130 130 130 171 172 171 172 130 Specifically, the cleaning rollersandare each preferably a cylindrical component whose outer perimeter surface is coated with a cleaning cloth, the cleaning cloth having an antistatic property, for example. The cleaning rolleris, for example, pressed against the outer surfaceA of the conveyance sheetand the cleaning rolleris, for example, pressed against the inner surfaceB of the conveyance sheet. As a result, the conveyance sheetis nipped, for example, by the cleaning rollersand, each of the cleaning rollersandis rotatable, for example, in accordance with the conveyance of the conveyance sheet.

150 150 150 150 171 172 171 172 130 171 172 150 50 130 150 As described above, since the display panelis flexible, physical durability of the display panelmay not necessarily be adequate. In this case, if a user or the like tries to clean the display surface P of the display panelmanually and directly using a cleaning cloth (e.g., cleaning by wiping), the display panelmay be damaged unintentionally due to the pressure generated when the cleaning cloth is pressed against the display surface P. In contrast, when the cleaning rollersandare used, the display surface P is cleaned by the cleaning rollersandusing the conveyance operation of the conveyance sheet. Therefore, if a so-called nip pressure is appropriately suppressed, the display surface P is cleaned by the cleaning rollersandwhile preventing the display panelfrom being damaged. This not only suppresses the damage of the display panel, but also suppresses damage of the conveyance sheethaving flexibility similarly to the display panel.

150 110 120 150 171 172 171 172 150 In this case, in particular, when a foreign matter such as dust is stuck to the display surface P and in a case where the display panelis wound by each of the conveyance rollersand, the display panelis liable to be damaged due to the foreign matter being strongly pressed against the display surface P. However, if the cleaning rollersandare used, the foreign matter stuck to the display surface P is removed by the cleaning rollersand, which makes it difficult that the display panelis damaged at the time of being wound.

170 171 172 171 172 130 171 172 130 150 171 172 150 150 110 120 171 172 171 172 It is to be noted that, although not specifically illustrated here, it is preferable that the cleaning mechanisminclude brushes together with the cleaning rollersand. The brushes are preferably located at the upstream side of the cleaning rollersandin the conveyance direction of the conveyance sheet. However, the brushes may also be disposed at the downstream side of the cleaning rollersandin the conveyance direction of the conveyance sheet. When the display panelis pressed against the cleaning rollersandin a state in which the foreign matter such as dust stuck to the display surface P, the display panelis liable to be damaged due to the foreign matter similarly as the case where the display panelis wound by each of the conveyance rollersand. Therefore, it is preferable that the brushes remove the foreign matter stuck to the display surface P prior to the display surface P being pressed against the cleaning rollersand. In this case, after the foreign matter stuck to the display surface P is removed by the brushes, an oil content (e.g., a fingerprint) stuck to the display surface P is wiped off by the cleaning rollersand. It is to be noted that, as long as it is possible to remove the foreign matter stuck to the display surface P, it is not limited to the brushes, and other members may be used.

170 170 130 1 160 170 3 FIG. 7 FIG. 12 FIG. An installation location of the cleaning mechanismis not particularly limited. Here, for example, as illustrated in, the cleaning mechanismis attached to the non-adjacent partYinside the housing. However, inandto be described later, illustration of the cleaning mechanismis omitted.

[Slide Mechanism]

180 110 120 140 142 160 180 110 120 140 The slide mechanismis a mechanism that slidingly (parallelly) moves the conveyance rollersandand the movement mechanismin the direction (Y-axis direction) intersecting a movement direction (Z-axis direction) of the supportwhile keeping the position of the housingfixed. That is, the slide mechanismis able to slide back and forth the conveyance rollersandand the movement mechanism.

180 181 110 120 140 181 110 120 140 130 110 120 150 130 181 The slide mechanismincludes, for example, a slide platethat supports the conveyance rollersandand the movement mechanism, and is movable back and forth using power such as a motor. With the slide platesupporting the conveyance rollersandand the movement mechanismand moving back and forth, the conveyance sheetextended between the conveyance rollersandand the display panelattached to the conveyance sheetare also movable back and forth similarly. Here, the slide plateserves as a “support movement member” of one embodiment of the present technology.

[1-2. Configuration of Display Panel]

150 150 150 Next, a configuration of the display panelwill be described. However, the configuration of the display paneldescribed below is only one specific example, and the configuration of the display panelis not limited to the configuration described below.

9 FIG. 1 FIG. 9 FIG. 150 20 10 30 150 is an enlarged cross-sectional configuration of the display panelillustrated in. It is to be noted that, in, a dimension of an image display layerin the Z-axis direction is made larger than the respective dimensions of a support baseand a protective basein the Z-axis direction, in order to make the configuration of display paneleasier to see.

150 20 30 30 A display format of the display paneldescribed here is, for example, a top emission type in which light H for displaying an image generated in the image display layeris emitted outside through the protective. Thus, the image is displayed on a surface (the display surface P) on which the protective baseis disposed.

150 10 20 30 20 10 30 9 FIG. The display panelis, for example, as illustrated in, a stack in which the support base, the image display layer, and the protective baseare stacked in this order. That is, the image display layeris sandwiched between the support baseand the protective base, for example.

[Support Base]

10 20 10 10 10 The support baseis a base that has flexibility and supports the image display layer. A material of the support baseis not particularly limited as long as the flexibility is able to be ensured. Specifically, the support baseis, for example, a polymer sheet or the like which contains polyimide. The support baseserves as a “flexible base” of one embodiment of the present technology.

[Protective Base]

30 20 10 30 10 10 The protective baseis a base that has flexibility and protects the image display layer, and has a similar configuration as the flexible basedescribed above, for example. However, a material of the protective basemay be the same as the material of the support base, or may be different from the material of the support base.

[Image Display Layer]

20 20 10 10 20 30 30 The image display layeris a layer that displays an image using an organic light emitting phenomenon. The image display layeris disposed on the support base, for example, and is thus supported by the flexible base, and the image display layeris covered by the protective base, for example, and is thus protected by the protective base.

20 26 20 26 26 26 The image display layerincludes, for example, a plurality of organic light emitting elementsthat emits the light H using the organic light emitting phenomenon. Here, the image display layerincludes, for example, a red organic light emitting elementR that emits red light HPR (e.g., wavelength=about 620 nm), a green organic light emitting elementG that emits green light HPG (e.g., wavelength=about 530 nm), and a blue organic light emitting elementB that emits blue light HPB (e.g., wavelength=about 460 nm).

20 21 22 23 24 25 26 26 26 27 28 29 20 10 Specifically, the image display layerincludes, for example, a plurality of driving elements, an interlayer insulating layer, a plurality of driving wiring lines, a planarizing insulating layer, an in-layer insulating layer, the red organic light emitting elementR, the green organic light emitting elementG, the blue organic light emitting elementB, a protective layer, an adhesion layer, and a color filter. The series of components included in the image display layerare stacked in this order, for example, by being formed in this order on one side of the support base.

[Plurality of Driving Elements]

21 26 26 26 21 23 The plurality of driving elementsdrives each of the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB, and is disposed in a matrix, for example. Each of the plurality of driving elementsis, for example, a thin film transistor (TFT) or the like and is coupled to a driving wiring line.

[Interlayer Insulating Layer]

22 21 22 21 10 21 2 The interlayer insulating layeris a layer that electrically separates the plurality of driving elementsfrom the surroundings, and includes any one or two or more of insulating materials such as silicon oxide (SiO), PSG (phospho-silicate glass), and the like, for example. The interlayer insulating layeris formed, for example, so as to cover the plurality of driving elementsand the support basearound the driving elements.

[Plurality of Driving Wiring Lines]

23 26 26 26 23 26 26 26 23 21 23 The plurality of driving wiring linesis a wiring that serves as a signal line for driving each of the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB, and includes, for example, any one or two or more of conductive materials such as aluminum (Al), an aluminum copper alloy (AlCu), and the like. The plurality of driving wiring linesis each coupled to the corresponding one of the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB. It is to be noted that two driving wiring linesare provided for each driving element, for example, and the two driving wiring linesfunction as a gate signal line and a gate signal line, for example.

[Planarizing Insulating Layer]

24 21 23 26 26 26 24 26 26 26 24 2 The planarizing insulating layeris a layer that electrically separates the driving elementsand the driving wiring linesfrom the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB. The planarizing insulating layeralso serves as a layer for planarizing a base layer on which the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB are each disposed. The planarizing insulating layerincludes, for example, any one or two or more of insulating materials such as silicon oxide (SiO) and the like.

[Red Organic Light Emitting Element, Green Organic Light Emitting Element, and Blue Organic Light Emitting Element]

26 26 26 21 20 26 26 26 26 26 26 The red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB are disposed in a matrix in a similar manner as the driving element. The image display layerincludes a plurality of sets of red organic light emitting elementsR, green organic light emitting elementsG, and blue organic light emitting elementsB, one set including the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB.

26 261 262 263 261 262 263 24 The red organic light emitting elementR includes, for example, a lower electrode layer, an organic light emitting layer, and an upper electrode layer. The lower electrode layer, the organic light emitting layer, and the upper electrode layerare stacked in this order on the planarizing insulating layer, for example.

261 21 The lower electrode layeris an individual electrode disposed in a matrix in a similar manner to the plurality of driving elements, and includes, for example, any one or two or more of conductive materials such as silver (Ag), gold (Au), and the like.

262 The organic light emitting layeris a layer that emits red light HR, and is a stack including a plurality of layers, for example. The plurality of layers may include any one or two or more of a hole injection layer, a hole transport layer, an electron injection layer, a hole transport layer, and the like, for example, as well as a light emitting layer for generating the red light HR.

263 26 26 26 261 263 262 30 The upper electrode layeris a common electrode extending through each of the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB, which is different from the lower electrode layer(an individual electrode) disposed in a matrix. The upper electrodeinclude, for example, any one or two or more of light-transmissive conductive materials such as indium tin oxide (ITO) and the like to direct the red light HR emitted from the organic light emitting layerto the protective base.

26 26 26 262 262 26 26 26 262 262 The green organic light emitting elementG has, for example, a similar configuration as the red organic light emitting elementR, except that the green organic light emitting elementG includes the organic light emitting layerthat generates the green light HG instead of the organic light emitting layerthat generates the red light HR. The blue organic light emitting elementB has, for example, a similar configuration as the red organic light emitting elementR, except that the blue organic light emitting elementB includes the organic light emitting layerthat generates the blue light HB instead of the organic light emitting layerthat generates the red light HR.

[In-Layer Insulating Layer]

26 26 26 26 The in-layer insulating layeris a layer for separating the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB from each other, and includes any one or two or more of insulating materials such as polyimides and the like, for example.

[Protective Layer]

27 26 26 26 The protective layeris a layer for protecting the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB, and includes any one or two or more of light-transmissive dielectric materials such as silicon nitride (SiN) and the like, for example.

[Adhesion Layer]

28 27 29 The adhesion layeris a layer that adheres the protective layerand the color filterto each other, and includes any one or two or more of adhesives, such as light-transmissive thermosetting resins and the like, for example.

[Color Filter]

29 26 26 26 29 20 The color filteris a member that transmits the red light HR, the green light HG, and the blue light HB respectively generated in the red organic light emitting elementR, the green organic light emitting elementG, and the blue organic light emitting elementB. It is to be noted that, the color filteralso serves to prevent contrast from decreasing due to the penetration of external light into an interior of the image display layer.

29 29 26 29 26 29 26 The color filterincludes, for example, a red filter regionR corresponding to the red organic light emitting elementR, a green filter regionG corresponding to the green organic light emitting elementG, and a blue filter regionB corresponding to the blue organic light emitting elementB.

[1-3. Block Configuration]

100 Next, a block configuration of the display devicewill be described.

10 FIG. 10 FIG. 100 illustrates a block configuration of the display device. However,also illustrates some of the components that have already been described above.

10 FIG. 101 102 103 104 105 105 107 108 109 The display device includes, for example, as illustrated in, an overall controller, a display controller, a conveyance controller, a movement controller, a slide controller, a tension detector, an external force detector, a tension sensor, and an impact sensor.

[Overall Controller]

101 100 101 The overall controllercontrols an entire operation of the display device. The overall controllerincludes, for example, a central processing unit (CPU) and a memory.

[Display Controller]

102 150 The display controllercontrols a display operation of the display panel.

142 141 150 130 150 160 102 150 150 Specifically, the supportis moved to the raised position in accordance with the elongating operation of the elongating/shortening partand the display panelis moved in accordance with the conveyance operation of the conveyance sheet, thus, the display panelis drawn out from the housing, and the display controllerdrives the display panel, for example. This causes the display panelto start displaying an image.

142 141 150 130 150 160 102 150 150 In contrast, the supportis moved to the lowered position in accordance with the shortening operation of the elongating/shortening partand the display panelis moved in accordance with the conveyance operation of the conveyance sheet, thus, the display panelis stored in the housing, and the display controllerstops the display panel, for example. Thus, the display panelstops displaying the image.

150 150 102 150 However, for example, instead of automatically switching the activation and stop of the display panelin accordance with the drawing out and the position of the display panelas described above, the display controllermay switch the activation and stop of the display panelin accordance with a user's operation.

150 130 150 130 2 102 150 150 11 FIG. In particular, as will be described later, when display panelmoves in accordance with the conveyance operation of the conveyance sheetand the display panelis located on the non-adjacent partY(see), the display controllerinverts the top and bottom of an image displayed by the display panel, for example. This makes it easier for the user to view the image also in a case where the display paneldisplays the image toward the back by the display surface P facing the back.

150 102 However, for example, instead of inverting the top and bottom of the image in accordance with the position of the display panelas described above, the display controllermay invert the top and bottom of the image in accordance with the user's operation.

[Conveyance Controller]

103 130 110 120 103 110 120 The conveyance controllercontrols the conveyance operation of the conveyance sheetby controlling the respective rotation operations of the conveyance rollersand. The conveyance controllerincludes, for example, a drive source such as a motor, for rotating each of the conveyance rollersand.

103 150 130 110 120 103 130 130 110 120 Specifically, the conveyance controllermoves the display paneltogether with the conveyance sheetby rotating each of the conveyance rollersand, for example, in accordance with the user's operation. In this case, the conveyance controllerable to move the conveyance sheettoward the front and is also able to move the conveyance sheettoward the back, by changing the respective rotation directions of the conveyance rollersand, for example.

142 142 103 130 150 130 1 103 130 150 130 1 110 120 150 Further, when the supportmoves to the raised position in accordance with the elongating operation of the elongating/shortening part, for example, the conveyance controllerconveys the conveyance sheetuntil the display panelis disposed on the non-adjacent partY. That is, the conveyance controlleris able to adjust a conveyance distance of the conveyance sheetto cause the display panelto be disposed on the non-adjacent partYin accordance with the respective rotations of the conveyance rollersand, for example. This allows the display panelto display an image toward the front because the display surface P faces the front.

103 130 150 130 2 142 150 However, the conveyance controllermay move the conveyance sheetuntil the display panelis located on the non-adjacent partY, for example, when the supportmoves to the raised position. In this case, the display surface P faces the back, thus, the display panelis able to display an image toward the back.

103 110 120 150 130 1 150 103 150 130 110 120 103 130 150 130 150 In addition, the conveyance controlleradjusts a rotation direction and a rotation amount of each of the conveyance rollersandin a state in which the display panelis disposed on the non-adjacent partY, for example, thereby adjusting the position of the display panelin the Z-axis direction. That is, the conveyance controlleris able to adjust the position of the display panelin the conveyance direction of the conveyance sheetin accordance with the respective rotations of the conveyance rollersand, for example. In this case, for example, the conveyance controlleris able to move the conveyance sheettoward the front to lower the position of the display paneland move the conveyance sheettoward the back to raise the position of the display panelin in accordance with the user's operation.

[Movement Controller]

104 142 141 104 140 The movement controllercontrols a movement operation of the support, that is, the elongating/shortening operation of the elongating/shortening part. The movement controllerswitches the operation of the movement mechanismin accordance with the user's operation.

104 142 160 142 141 Specifically, the movement controllerdraws out the supportfrom inside the housingand moves the supportto the raised position by, for example, elongating and shortening the elongating/shortening partin accordance with the user's activation operation.

104 142 142 160 141 In contrast, the movement controllermoves the supportto the lowered position and stores the supportin the housingby, for example, shortening the elongating/shortening partin accordance with the user's stop operation.

104 142 141 However, the movement controlleris also able to stop the supportat any position between the raised position and the lowered position by, for example, adjusting an amount of elongation and shortening of the elongating/shortening part, as described above.

104 142 130 106 104 130 142 Further, the movement controlleris able to adjust a movement distance of the support, for example, on the basis of a tension of the conveyance sheetdetected by a tension detectorto be described later. That is, the movement controlleradjusts the tension of the conveyance sheetby, for example, using the supportas a so-called tension bar.

130 142 150 130 130 1 130 2 150 130 130 1 130 2 150 In particular, in a case where the tension of the conveyance sheetis inappropriate in a state in which the supporthas moved to the raised position, it becomes difficult for the user to view an image displayed by the display panel. More specifically, if the tension of the conveyance sheetis insufficient, the non-adjacent partsYandYare bent, and thus the image displayed by the display panelis also bent. In contrast, if the tension of the conveyance sheetis excessive, the non-adjacent partsYandYundulate, and thus the image displayed by the display panelalso undulates.

130 104 142 141 141 142 130 130 1 130 2 150 Accordingly, for example, in a case where the tension of the conveyance sheetis lower than a reference value, the movement controllerfurther raises the supportby further elongating and shortening the elongating/shortening part. It is possible to freely set the amount of elongation of the elongating/shortening partin this case, i.e., the movement distance of the support. As a result, the tension of the conveyance sheetrises, thereby flattening the non-adjacent partsYandY, and thus, the image displayed by the display panelis also flattened.

130 104 142 141 141 142 130 130 1 130 2 150 In contrast, for example, in a case where the tension of the conveyance sheetis higher than a reference value, the movement controllerlowers the supportby shortening the elongating/shortening part. It is possible to freely set the amount of shortening of the elongating/shortening partin this case, i.e., the movement distance of the support. As a result, the tension of the conveyance sheetis reduced, thereby flattening the non-adjacent partsYandY, and thus, the image displayed by the display panelis also flattened.

104 142 107 142 107 104 142 Further, the movement controlleris able to adjust the movement distance of the support, for example, on the basis of a result of detecting an external force F by an external force detectorto be described later in the state in which the supporthas moved to the raised position. That is, when the external force F is detected by the external force detector, for example, the movement controlleradjusts the movement distance of support.

142 130 150 130 130 150 Specifically, in the state in which the supporthas moved to the raised position, the tension of the conveyance sheetis appropriately high to ensure the flatness of the display panel. Therefore, if the external force F is unintentionally applied to the conveyance sheet, the conveyance sheetmay be damaged, and the display panelmay be damaged in some cases.

107 104 142 141 104 142 130 142 130 141 142 130 130 130 130 130 150 Thus, for example, when the external force F is detected by the external force detector, the movement controllerrapidly lowers the supportby greatly shortening the elongating/shortening part. In other words, the movement controlleris able to adjust the movement distance of the supportto cause the conveyance sheetto bend, by moving the supportin a direction to be spaced apart from the inner surfaceB in response to the detection of the external force F, for example. The amount of shortening of the elongating/shortening part, that is, the amount of lowering of the supportin this case is not particularly limited as long as the amount is enough to intentionally bend the conveyance sheet, and may therefore be set to any value. As a result, the tension of the conveyance sheetis temporarily lowered, thus, the conveyance sheetis intentionally bent; therefore, an influence of the external force F on the conveyance sheetis reduced. Accordingly, the conveyance sheetis less likely to be damaged, and the display panelis also less likely to be damaged.

[Slide Controller]

105 180 105 180 The slide controllercontrols a sliding operation of the slide mechanism. The slide controllerincludes, for example, a drive source such as a motor or the like, for moving the slide mechanism.

105 180 110 120 140 180 150 130 Specifically, the slide controllermoves the slide mechanismtoward the front, for example, in response to the user's operation (forward movement operation). As a result, the conveyance rollersandand the movement mechanismsupported by the slide mechanismmove toward the front, and thus the display panelalso moves toward the front together with the conveyance sheet.

105 180 110 120 140 180 150 130 In contrast, the slide controllermoves the slide mechanismtoward the back, for example, in response to the user's operation (backward movement operation). As a result, the conveyance rollersandand the movement mechanismsupported by the slide mechanismmove toward the back, and thus the display panelalso moves toward the back together with the conveyance sheet.

[Tension Detector]

142 106 130 108 104 In the state in which the supporthas moved to the raised position, the tension detectordetects the tension of the conveyance sheetusing the tension sensorand transmits a result of detecting the tension to the movement controller.

130 106 130 1 130 2 142 130 1 130 2 150 The tension of the conveyance sheetdetected by the tension detectoris a tension of one or both of the non-adjacent portionsYandY. This is because, in the state in which the supporthas moved to the raised position, the tension of the non-adjacent partsYandYexerts an influence on the flatness of the image displayed by the display panel.

[External Force Detector]

142 107 130 109 104 109 12 FIG. In the state in which the supportis above the raised position, the external force detectordetects the external force F (see) supplied to the conveyance sheetusing the impact sensorand transmits a result of detecting the external force to the movement controller. The impact sensormay include, for example, an acceleration sensor and the like.

107 130 1 130 2 142 130 1 130 2 150 The external force F detected by the external force detectoris an external force supplied from outside to the non-adjacent portionsYandY. This is because in the state in which the supporthas moved to the raised position, the external force F supplied to the non-adjacent partsYandYexerts an influence on physical durability of the display panel.

130 It is to be noted that a factor of the external force is not particularly limited. Specifically, the external force F is a force or the like generated attributed to, for example, a collision of an object being erroneously thrown with the conveyance sheet.

[Other components]

100 100 It is to be noted that the display devicemay further include any one or two or more of other component. Other components are not particularly limited, and include, for example, a power source for activating the display device.

[1-4. Operation]

100 Next, an operation of the display devicewill be described.

100 150 1 12 FIGS.to 10 FIG. Hereinafter, for example, an overall operation of the display devicewill be described with reference to, and then a display operation of the display panelwill be described with reference to.

11 12 FIGS.and 3 FIG. 100 100 each illustrate a cross-sectional configuration of the display devicecorresponding tofor describing the operation of the display device.

[Overall Operation]

5 8 FIGS.to 100 142 141 140 150 160 130 150 110 As illustrated in, in the display devicein an initial state, the supportis the located at the lowered position by the elongating/shortening partin the movement mechanismbeing shortened, thus, the display panelis stored in the housingtogether with the conveyance sheet. The display panelis wound by the conveyance roller.

105 150 181 In the initial state, the slide controlleradjusts the position of the display panelin the Y-axis direction by moving the slide platein the Y-axis direction, as necessary.

100 181 150 130 150 Specifically, for example, in a case where the display deviceis installed in the vicinity of a wall in a house and an obstacle such as a window or a curtain is present on the wall, the slide platemay be moved toward the front. This causes the display panelto move forward together with the conveyance sheet, thereby moving the display panelaway from the obstacle.

150 181 150 130 150 Further, for example, in a case where the display panelis too close to a viewing position of the user, the slide platemay be moved toward the back. This causes the display panelto move backward together with the conveyance sheet, thereby moving the display panelaway from the viewing position of the user.

[Operation at Start of Usage]

100 103 110 120 130 110 130 120 130 110 120 150 130 110 120 To start using the display device, the conveyance controllerfirst rotates each of the conveyance rollersand. In this case, the conveyance sheetis unwound from the conveyance rollerand the conveyance sheetis wound by the conveyance roller. This conveys the conveyance sheetfrom the conveyance rollerto the conveyance roller, thus, the display panelattached to the conveyance sheetmoves from the conveyance rollerto the conveyance roller.

130 170 171 172 130 130 171 130 172 In this case, the conveyance sheetis nipped by the cleaning mechanism(the cleaning rollersand), as described above. As a result, when the conveyance sheetis conveyed, the outer surfaceA is cleaned by the cleaning rollerand the inner surfaceB is cleaned by the cleaning roller.

104 140 130 110 120 141 142 130 142 130 110 120 142 142 1 4 FIGS.to The movement controllerthen drives the movement mechanismwhen the conveyance sheetmoves from the conveyance rollerto the conveyance roller. In this case, the elongating/shortening partelongates, thus, the supportmoves from the lowered position to the raised position. As a result, a portion of the conveyance sheetis pushed up by the support, and thus, as illustrated in, the conveyance sheetis conveyed from the conveyance rollerto the conveyance rolleralong the outer perimeter surfaceM of the support.

142 103 150 110 120 150 130 1 150 150 To move the supportto the raised position, the conveyance controlleradjusts the position of the display panelby adjusting the rotation direction and the rotation amount of each of the conveyance rollersandsuch that the display panelis disposed on the non-adjacent partYand the display panelis located at a predetermined position in the Z-axis direction. This causes the display surface P to face the front. Thus, the display panelis able to display an image toward the front.

102 150 150 Finally, the display controllerdrives the display panel. This causes the display panelto display the image toward the front.

103 150 110 120 150 130 150 150 160 150 142 142 In this case, the conveyance controlleradjusts the position of the display panelin the Z-axis direction by adjusting the rotation direction of the rotation amount of each of the conveyance rollersand, as described above. In this case, the position of the display panelis adjusted by using the blank spaceS; therefore, even if the position of the display panelis changed, it is less likely that the display panelis shielded by the housing, and that the display panelis curved along the outer perimeter surfaceM of the support.

104 130 142 130 106 108 Further, as described above, the movement controlleradjusts the tension of the conveyance sheetby adjusting the position (the movement distance) of the supporton the basis of the result of detecting the tension of the conveyance sheetobtained by the tension detectorusing the tension sensor.

150 150 150 As a result, the display panelis disposed at a desired position in the Z-axis direction and the display panelbecomes flat, and thus, it becomes easier for the user to view the display panel.

130 150 130 2 102 150 150 11 FIG. It is to be noted that, in a case where the conveyance sheetis further conveyed in accordance with the user's operation, as illustrated in, the display panelis disposed on the non-adjacent partY, and thus, the display surface P faces the back. In this case, the display controllerinverts the top and bottom of the image displayed by the display panel, as described above. This makes it easier for the user to view the display paneleven in the case where the display panel P faces the back.

107 109 104 142 141 130 130 150 130 142 12 FIG. 12 FIG. Further, as described above, when the external force F is detected by the external force detectorusing the impact sensor, the movement controllerlowers the supportby using the shortening operation of the elongating/shortening part, as illustrated in, thus, the conveyance sheetis intentionally bent. As a result, even in a case where the external force F is unintentionally applied to the conveyance sheet, the display panelis less likely to be damaged, as well as the conveyance sheet. It is to be noted that a circle indicated by a dashed line inrepresents the position of the supportprior to the detection of the external force F.

[Operation at End of Use]

100 103 110 120 130 120 130 110 130 120 110 150 130 120 110 To terminate the use of the display device, the conveyance controllerfirst rotates the conveyance rollersandin opposite directions. In this case, the conveyance sheetis unwound from the conveyance rollerand the conveyance sheetis wound by the conveyance roller. This makes the conveyance sheetto move from the conveyance rollerto the conveyance roller, thus, the display panelattached to the conveyance sheetalso moves from the conveyance rollerto the conveyance roller.

104 140 130 120 110 141 142 130 142 130 160 142 150 130 160 1 4 FIGS.to Subsequently, the movement controllerre-drives the movement mechanismwhen the conveyance sheetmoves from the conveyance rollerto the conveyance roller. In this case, since the elongating/shortening partis shortened, the supportmoves from the raised position to the lowered. As a result, a portion of the conveyance sheetpushed up by the supportis lowered, and as illustrated in, the conveyance sheetis stored in the housingtogether with the support, thus, the display panelattached to the conveyance sheetis also stored in the housing.

[Display Operation]

150 262 261 263 21 262 26 26 26 29 20 In the display panel, holes and electrons recombine in the organic light emitting layerby applying a voltage between the lower electrode layerand the upper electrode layerby using the plurality of driving elements, thus, the organic light emitting layeremits light. This causes the red light HR to be generated in the red organic light emitting elementR, the green light HG to be generated in the green organic light emitting elementG, and the blue light HB to be generated in the blue organic light emitting elementB. Accordingly, since the red light HR, the green light HG, and the blue light HB are emitted outside through the color filterand the protective basein this order, a full-color image is displayed on the display surface P on the basis of the red light HR, the green light HG, and the blue light HB.

[1-5. Workings and Effects]

100 150 130 110 120 140 142 110 120 130 According to the display device, the flexible display panelis attached to the conveyance sheetwhich is conveyable in accordance with the respective rotations of the conveyance rollersand, and the movement mechanism(the support) disposed between the conveyance rollersandis movable to cause the conveyance sheetto be partially pushed up.

150 100 150 100 150 130 142 100 150 100 100 5 8 FIGS.to 1 4 FIGS.to In this case, first, as described above, the display panelis wound up when the display deviceis not in use () and the display panelis unwound so as to be viewable by the user when the display deviceis in use (), by utilizing the flexibility of the display paneltogether with the conveyance operation of the conveyance sheetand the movement operation of the support. As a result, when the display deviceis in use, an image is stably viewable by the user on the display panel, and when the display deviceis not in use, the display deviceis reduced in size.

150 130 1 150 150 130 2 130 150 100 3 FIG. Second, in a case where the display panelis disposed on the non-adjacent partY, the display panelis able to display an image toward the front (), and in a case where the display panelis disposed on the non-adjacent partYin accordance with the conveyance operation of the conveyance sheet, the display panelis able to display an image toward the back. This allows the user to view the image in two directions, (from the front and from the back), using one display device.

100 142 100 142 100 100 Third, a height of the display devicewhile being in use is determined in accordance with a height of the supportlocated substantially at the raised position, thus, it is possible to freely change a maximum height of the display deviceby changing the height of the support. This increases a degree of freedom regarding an installation location of the display device, thus, it is possible to install the display devicein various installation location regardless of a height of the installation location.

100 100 From these facts, it is possible to stably view an image while achieving miniaturization of the display devicein a non-use state, displaying of an image in multiple directions, and installation of the display devicein various installation locations, and therefore, it is possible to obtain excellent convenience.

150 20 10 150 150 In particular, if the display panelincludes the image display layersupported by the flexible support base, the flexibility of the display panelis ensured, which makes it easier for the display panelto be wound up; therefore, it is possible to obtain further higher effects.

104 142 130 106 130 150 Further, if the movement controlleris able to adjust the movement distance of the supporton the basis of the detection result (the tension of the conveyance sheet) of the tension detector, the tension of the conveyance sheetis optimized, thus, the flatness of the display panelis improved. Accordingly, it becomes easier for the user to stably view an image; therefore, it is possible to obtain further higher effects.

103 130 150 130 1 130 2 100 150 150 150 160 Further, if the conveyance controlleris able to adjust the conveyance distance of the conveyance sheetsuch that the display panelis disposed on one of the non-adjacent partsYandYat the time of starting the use of the display device, the display panelmoves to a position at which the user is able to view the display paneleven if the display panelis stored in the housingat the time of not in use. Accordingly, it becomes easier for the user to stably view an image; therefore, it is possible to obtain further higher effects.

104 150 130 110 120 150 150 150 130 100 150 In this case, if the movement controlleris able to adjust the position of the display panelin the conveyance direction of the conveyance sheeton the basis of the rotational direction and the rotation amount of each of the conveyance rollersand, then the position of the display panelis adjusted such that the display panelis disposed at a desired position where it is easy for the user to see an image. This makes it easier to change the position of the display panel, in particular by using only the conveyance operation of the conveyance sheet, without moving the entire display devicein the Z-axis direction. Accordingly, by easily changing the height of the display panel, it becomes easy for the user to view the image regardless of a height of the eyes; therefore it is possible to obtain further higher effects.

130 130 130 1 130 2 150 160 150 142 142 150 130 Further, if the blank spaceS is provided in the conveyance sheet(the non-adjacent partsYandY), it is less likely that the display panelis shielded by the housingand that the display panelis curved along the outer perimeter surfaceM of the support, even if the position of the display panelis changed in the conveyance direction of the conveyance sheet. Accordingly, a stable image viewing state is maintained; therefore it is possible to obtain further higher effects.

104 142 107 130 150 Moreover, if the movement controlleris able to adjust the movement distance of the supportin accordance with the result of detection (presence or absence of the external force F) obtained by the external force detector, the influence of the external force F exerted on the conveyance sheetis reduced. Accordingly, the display panelor the like is less likely to be damaged; therefore it is possible to obtain further higher effects.

181 110 120 140 150 100 150 Also, if the slide plateis slidable in the Y-axis direction while supporting the conveyance rollersandand the movement mechanism, the display panelis moved away from an obstacle such as a window or the like, without moving the entire display device. Accordingly, the position of the display panelis easily adjusted in a depth direction; therefore it is possible to obtain further higher effects.

100 17 150 130 150 150 150 150 Further, if the display deviceis provided with the cleaning mechanism, the display surface P of the display paneland the like are cleaned by the conveyance operation of the conveyance sheet, thus, it is not necessary for the user to clean the display surface P of the display paneland the like again. In addition, display paneland the like are less likely to be damaged than the case where the user manually and directly cleans the display surface P and the like. Accordingly, the display panelor the like is cleaned while the damage of the display panelor the like is suppressed; therefore it is possible to obtain further higher effects.

100 160 150 100 150 160 100 150 160 150 160 150 100 5 8 FIGS.to 1 4 FIGS.to Still further, if the display deviceis provided with the housingthat stores the display panelor the like, when the display deviceis not in use, the display panelor the like is stored in the housing(), and when the display deviceis in use, the display panelor the like is drawn out from the housing(). As a result, when not in use, the display panelis hidden inside the housing, thus, the display panelis not viewed by the user. Accordingly, a design of the display deviceis improved; therefore it is possible to obtain further higher effects.

100 The configuration of the display devicedescribed above may be changed as appropriate. It is to be noted that, as for a series of modification examples described below, any two or more of them may be combined with each other.

150 100 100 150 150 13 FIG. 3 FIG. The number of display panelsmounted on the display deviceis not particularly limited. Specifically, for example, as illustrated incorresponding to, the display devicemay include two display panelsby adding an additional display panel.

142 150 130 1 150 130 2 With the supporthaving moved to the raised position, the first display panelis disposed on the non-adjacent partYand the second display panelis disposed on the non-adjacent partY.

100 150 150 150 130 150 150 In this case, unlike the case where the display devicehas only one display panel, it becomes possible to display an image toward the back using the second display paneleven if one display panelis not moved using the conveyance operation of the conveyance sheet. This allows the first display panelto display the image toward the front and the second display panelto display the image toward the back, thereby allowing the image to be displayed in two directions (toward the front and the back). This makes it possible for a plurality of users to view the image from different directions (from the front and the back); therefore, it is possible to obtain further higher effects.

150 150 Contents of the image displayed in the first display paneland contents of the image displayed in the second display panelmay be the same or different from each other.

100 150 150 150 150 It is needless to say that, although the explanation has been made here with respect to the case where the display deviceincludes two display panels, the number of display panelsis not particularly limited as described above, and therefore, the number may be three or more. In a case where the number of display panelsis three or more, installation locations of the respective display panelsmay be freely set.

140 100 100 140 140 141 142 14 15 FIGS.and 3 FIG. The number of movement mechanismmounted on the display deviceis not particularly limited. Specifically, for example, as illustrated incorresponding to, the display devicemay include two movement mechanismsby adding an additional movement mechanism(the elongating/shortening partand the support).

14 FIG. 140 140 110 120 140 120 110 130 110 142 142 142 142 120 As illustrated in, for example, the two movement mechanismsare spaced apart from each other at a predetermined distance in the Y-axis direction. More specifically, the first movement mechanismis disposed at side closer to the conveyance rollerthan the conveyance roller, for example, and the second movement mechanismis disposed at side closer to the conveyance rollerthan the conveyance roller, for example. As a result, the conveyance sheetunwound from the conveyance rolleris, for example, conveyed along the outer perimeter surfaceM of the first supportand then conveyed along the outer perimeter surfaceM of the second support, thereby being wound by the conveyance roller.

130 130 1 130 2 130 1 130 2 130 3 142 130 1 142 142 130 2 142 142 130 1 110 140 130 2 120 140 130 3 140 140 In this case, the conveyance sheetincludes, for example, two adjacent partsXandX, and three non-adjacent partsY,Y, andY, in a state in which the supporthas moved to the raised position. The adjacent partXis a part adjacent to the outer perimeter surfaceM of the first support, and the adjacent partXis a part adjacent to the outer perimeter surfaceM of the second support. The non-adjacent partYis a part located between the conveyance rollerand the first movement mechanism, the non-adjacent partYis a part located between the conveyance rollerand the second movement mechanism, and the non-adjacent partYis a part located between the first movement mechanismand the second movement mechanism.

100 130 150 130 1 150 130 150 130 2 150 130 150 130 3 150 14 FIG. 11 FIG. 15 FIG. In the display device, as illustrated in, for example, the conveyance sheetis conveyed until the display panelis disposed on the adjacent partY, thereby enabling the display panelto display an image toward the front. Though not specifically illustrated here, for example, similarly to the case illustrated in, the conveyance sheetis conveyed until the display panelis disposed on the non-adjacent partY, thereby enabling the display panelto display the image toward the back. Further, for example, as illustrated in, the conveyance sheetis conveyed until the display panelis disposed on the non-adjacent partY, thereby enabling the display panelto display the image upward.

Accordingly, the user is able to view the image in three directions (forward, backward, and upward); therefore, it is possible to obtain further higher effects.

100 140 140 It is needless to say that, although the explanation has been made here with respect to the case where the display deviceincludes two movement mechanisms, the number of movement mechanismsis not particularly limited as described above, and therefore, the number may be three or more.

142 110 120 142 130 130 142 142 130 142 130 The supportmay be a roller which, similarly to each of the conveyance rollersand, is rotatable about the X-axis, for example. In this case, the rotation of the supportin accordance with the conveyance of the conveyance sheetcauses a friction generated between the conveyance sheetand the support(the outer perimeter surfaceM) to be reduced, and therefore, the conveyance sheetis easily conveyed along the outer perimeter surfaceM. Accordingly, the conveyance sheetis easily conveyed smoothly and stably; therefore, it is possible to obtain further higher effects.

170 171 172 150 130 171 172 171 150 The cleaning mechanismmay include only one of the cleaning rollersand, for example. Also in this case, the display panelis cleaned together with the conveyance sheet, and thus, it is possible to obtain similar effects. However, when only one of the cleaning rollersandis used, it is preferable to use the cleaning rollercapable of cleaning the display surface P, to prevent the display panelfrom being damaged at the time of winding due to a foreign matter stuck to the display surface P.

170 171 172 130 130 130 The cleaning mechanismis not limited to the cleaning rollersanddescribed above as long as it is possible to remove a foreign matter stuck to the conveyance sheet(the outer surfaceA and the inner surfaceB).

170 130 170 130 130 Specifically, the cleaning mechanismmay be, for example, a blower (a fan or an air blower) that blows away a foreign matter by blowing air to the conveyance sheet. Also in this case, the cleaning mechanismmay include, for example, a pair of blowers. The pair of blowers, for example, includes a blower that blows air to the outer surfaceA and a blower that blows air to the inner surfaceB.

150 170 Also in this case, the display surface P of the display paneland the like are cleaned by the cleaning mechanism, and thus, it is possible to obtain similar effects.

141 142 1410 1420 141 142 The type of the elongating/shortening partthat moves the supportis not limited to the linkage including the plurality of pivot platesand the plurality of pivot pinsdescribed above. That is, the configuration of the elongating/shortening partmay be freely changed, as long as it is possible to move the supportin the Z-axis direction by being able to elongate and shorten in the Z-axis direction.

100 160 150 160 140 142 142 Although not specifically illustrated here, additional components may be provided to the display deviceas necessary, for example. Types of the additional components are not particularly limited. Specifically, an example of the additional components includes a lid member that closes the openingK in a state in which the display panelor the like is stored in the housing. Further, another example of the additional component includes a cover member that shields the movement mechanismto hide the supportor the like in a state in which the supportis moved to the raised position.

Although the disclosure is described hereinabove with reference to the example embodiments and modification examples, these embodiments and modification examples are not to be construed as limiting the scope of the disclosure and may be modified in a wide variety of ways.

It should be appreciated that the effects described herein are mere examples. Effects of an example embodiment and modification examples of the disclosure are not limited to those described herein. The disclosure may further include any effects other than those described herein.

a first rotation member configured to rotate; a second rotation member configured to rotate, the second rotation member being spaced apart from the first rotation member; a conveyance member that is extended between the first rotation member and the second rotation member, is configured to be conveyed between the first rotation member and the second rotation member in accordance with respective rotations of the first rotation member and the second rotation member, and has an inner surface and an outer surface; an abutting movement member that is disposed between the first rotation member and the second rotation member, and is configured to move to cause the conveyance member to be partially pushed up while being abutted against the inner surface; and a display member having flexibility that is attached to the outer surface, and displays an image using an organic light emitting phenomenon. (1) A display device including: a flexible base, and an image display layer that is supported by the flexible base and displays the image. (2) The display device according to (1), in which the display member includes a movement controller that controls movement of the abutting movement member; and a tension detector that detects a tension of the conveyance member, in which the movement controller is configured to adjust a movement distance of the abutting movement member on a basis of the tension of the conveyance member detected by the tension detector. (3) The display device according to (1) or (2), further including: in a state in which the abutting movement member is moved to cause the conveyance member to be partially pushed up while being abutted against the inner surface, the conveyance member includes an adjacent part that is adjacent to the abutting movement member and a non-adjacent part that is not adjacent to the abutting movement member, and the conveyance controller is configured to adjust a conveyance distance of the conveyance member to cause the display member to be disposed on the non-adjacent part in accordance with the respective rotations of the first rotation member and the second rotation member. (4) The display device according to any one of (1) to (3), further including a conveyance controller that controls conveyance of the conveyance member in accordance with the respective rotations of the first rotation member and the second rotation member, in which (5) The display device according to (4), in which, in a state in which the display member is disposed on the non-adjacent part, the conveyance controller is configured to adjust a position of the display member in a conveyance direction of the conveyance member in accordance with the respective rotations of the first rotation member and the second rotation member. (6) The display device according to (5), in which the non-adjacent part has a blank space to which the display member is not attached at least one of upstream side or downstream side of the display member in the conveyance direction of the conveyance member. a movement controller that controls movement of the abutting movement member; and an external force detector that detects, in a state in which the abutting movement member is moved to cause the conveyance member to be partially pushed up while being abutted against the inner surface, an external force to be supplied to the conveyance member, in which when the external force is detected by the external force detector, the movement controller is configured to adjust a movement distance of the abutting movement member to cause the conveyance member to bend, by moving the abutting movement member in a direction to be spaced apart from the inner surface. (7) The display device according to any one of (1) to (6), further including: (8) The display device according to any one of (1) to (7), further including a support movement member that supports the first rotation member, the second rotation member, and the abutting movement member, and is configured to move in a direction that intersects a movement direction of the abutting movement member. (9) The display device according to any one of (1) to (8), further including a cleaning member that is disposed along a conveyance path of the conveyance member, and is configured to clean at least one of the inner surface or the outer surface. when the abutting movement member moves to cause the conveyance member to be partially pushed up while being abutted against the inner surface, the display member is configured to be drawn out from the storage member together with a portion of the abutting movement member and a portion of the conveyance member. (10) The display device according to any one of (1) to (9), further including a storage member that stores the first rotation member, the second rotation member, the conveyance member, the abutting movement member, and the display member, in which, It is to be noted that the present disclosure may have the following configurations.

It should be understood by those skilled in the art that various modifications, combinations, sub-combinations, and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.